CN105782306A - Permanent electromagnetic compounding semi-active vibration isolation actuator - Google Patents
Permanent electromagnetic compounding semi-active vibration isolation actuator Download PDFInfo
- Publication number
- CN105782306A CN105782306A CN201610297795.6A CN201610297795A CN105782306A CN 105782306 A CN105782306 A CN 105782306A CN 201610297795 A CN201610297795 A CN 201610297795A CN 105782306 A CN105782306 A CN 105782306A
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- armature
- tooth
- housing
- flange
- permanent
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/06—Magnetic or electromagnetic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
Abstract
The invention aims at providing a permanent electromagnetic compounding semi-active vibration isolation actuator. A permanent magnet is arranged between a first shell and a second shell. A hollow shell structure is jointly formed by the first shell, the permanent magnet and the second shell. A spindle is mounted in an armature, the armature is mounted in the shell structure, and the first end of the armature stretches out of the second shell. A flange and the end of the second shell are fixed. A first bearing end cover is fixed to the end of the first shell. A second bearing end cover is fixed to the end of the flange. The first bearing end cover and the second bearing end cover are arranged outside the two ends of the spindle correspondingly. The outer sides of the two ends of the spindle are each provided with a nut. Springs are mounted between one nut and the first bearing end cover and between the other nut and the second bearing end cover correspondingly. The permanent electromagnetic compounding semi-active vibration isolation actuator combines the functions of a passive vibration isolator and a controllable rigidity actuator in a traditional semi-active vibration isolation system, and meanwhile the problem that the passive vibration isolator in the traditional semi-active vibration isolation system is instable is solved.
Description
Technical field
The present invention relates to a kind of vibration control apparatus, specifically vibration isolator.
Background technology
Mechanical vibration are nearly ubiquitous in daily life, and its harm is also well-known.Isolating technique (abbreviation vibration isolation) technology is one of technology most widely used in vibration control field, refers to that vibration source is separated by employing add-on subsystem with the object needing vibration damping, to reduce the vibration source impact on vibration isolation object.Semi-active vibration-isolating is the state modulator technology of a kind of vibrating isolation system, and it, according to the change of system input and the requirement to system output, regulates rigidity or the damping of some link in vibrating isolation system in real time, thus enabling the system to obtain excellent dynamics.Semi-active vibration-isolating system, compared with passive type vibrating isolation system, has and adapts to the change of outer scrambling rate, the advantage being effectively isolated low-frequency vibration；Compared with active vibration isolation system, substantial amounts of energy or weight requirements will not be brought again, and it is relatively easy to control system, less costly, reliable.Therefore, in the last few years, semi-active vibration-isolating was widely studied as the compromise algorithm of passive vibration isolation and active vibration isolation.
Application number is in the patent application document of 88107926.X, propose a kind of electromagnetic type spring rate continuously adjustabe method for vibration and dashpot, it utilizes the electromagnetic spring of tooth-shape structure to replace the mechanical spring in traditional power dashpot, frequency of vibration according to vibrating object, regulate the exciting current in electromagnetic spring, the spring rate of electromagnetic spring can be changed, reach the purpose of weakening.
Application number is in the patent application document of 201110347104.6, it is proposed that a kind of coil external type semiactive vibration absorber in enclosed structure, the mode supported with base replaces the mode that axle supports, and reduces center of gravity, improves mounting stability, particularly lateral stability.
Application number is in the patent application document of 200910071808.8, it is proposed that a kind of redundant variable pitch structure semiactive vibration-isolating actuator, its composition includes axle, end cap, housing, coil windings, flange, armature, locking nut, controller etc..Armature is fixed on axle by locking nut, two end caps are mounted on an axle, housing and flange are arranged between two end caps, the space that flange and housing surround is provided with coil windings, the lead-in wire of coil windings is connected to controller, armature, flange and housing all have tooth, the flank profil of armature and flange, housing flank profil between gap form air gap.Adopt non-permanent magnet material as permeability magnetic material, adopt integrated coil winding, between dynamic and static Magnet, be designed to dentation, there is bigger electromagnetic force, particularly design tooth pitch is not etc., it is easier to realize displacement and electromagnetic force is linear approximate relationship, to reach better vibration isolating effect.
Although above-mentioned stiffness variable semiactive vibration-isolating actuator all has certain advantage, but there is also clearly disadvantageous:
By vibration isolation principle it can be seen that vibration isolator scrambling rate only outside is more than system frequencyTimes time, just have good vibration isolating effect.And above-mentioned stiffness variable semiactive vibration-isolating actuator need when application with passive type vibration isolator with the use of.Consider quiet deformation can not the problem of excessive and unstability, in system, passive type vibration isolator rigidity can not be too little.Electromagnetic actuator can only increase, and system stiffness can not be reduced, the size degree that rigidity increases simply can be changed with curent change, so the natural frequency of system is also impossible to too little, this causes being only limitted to for the isolation of low-frequency vibration increase system stiffness, makes formant move to high band, thus avoiding formant, but the transport of its power is still relatively big, have impact on vibration isolating effect.And existing passive type vibration isolator in system, there is again rigidity controllable executor, cause that parts are more, structure is complicated.
Summary of the invention
It is an object of the invention to provide and there is bigger stiffness equivalent scope, effectively reduce the semiactive vibration-isolating actuator of the permanent-magnetism electromagnetic compound of system complexity.
The object of the present invention is achieved like this:
nullThe semiactive vibration-isolating actuator of permanent-magnetism electromagnetic compound of the present invention，It is characterized in that: include the first housing、Second housing、Flange、Main shaft、Permanent magnet、Armature，Described first housing、Second housing、Flange、Armature and permanent magnet are circulus，Permanent magnet is arranged between the first housing and the second housing，First housing、Permanent magnet and the second housing have collectively constituted the shell structure of hollow，Main shaft is arranged in armature，And the two of main shaft ends pass armature outside respectively，Armature is arranged in shell structure，The first end of armature extend out to outside the second housing，The end of flange and the second housing fixes and matches with the outside of armature first end in the inner side of flange，Clutch shaft bearing end cap is fixed in the end of the first housing，The second bearing (ball) cover is fixed in the end of flange，Clutch shaft bearing end cap and the second bearing (ball) cover are separately positioned on outside two ends of main shaft，It is separately installed with nut outside two ends of main shaft，Two nuts and clutch shaft bearing end cap、It is respectively mounted spring between second bearing (ball) cover.
The present invention can also include:
1, hookup wire coil between permanent magnet and main shaft, bobbin is installed coil windings.
2, the first case inside, inside flange and outside armature on tooth is set, when main shaft does not produce displacement, the position of the tooth on armature that the tooth of the first case inside is corresponding is oppositely arranged, and the position of the tooth on armature that tooth inside flange is corresponding is oppositely arranged.
3, the first housing, flange, tooth on armature are the tooth becoming the tooth pitch facewidth.
4, leave working gas gap between the tooth on the armature that the tooth of the first case inside is corresponding, between the tooth on armature that tooth inside flange is corresponding, leave working gas gap.
Present invention have an advantage that the present invention has the function of passive vibration isolation device and rigidity controllable executor in tradition semi-active vibration-isolating system concurrently, effectively reduce the complexity of system；There is no the problem of passive vibration isolation device unstability in traditional semi-active vibration-isolating system, when low-frequency vibration, it is possible in the amplitude range allowed, the relatively reduction system stiffness of limits, thus being substantially reduced the transport of power so that low frequency vibration isolation effect is more preferably simultaneously；The reverse energising of coil windings can be passed through, offset the magnetic field that a part of permanent magnet produces, it is also possible to be energized by the forward of coil windings, make electromagnetic field superpose with permanent magnetic field, it is hereby achieved that bigger stiffness equivalent scope, it is achieved the good vibration isolation in broadband.
Accompanying drawing explanation
Fig. 1 is the side view of the present invention；
Fig. 2 is the A-A view of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing citing, the present invention is described in more detail:
In conjunction with Fig. 1-2, the invention mainly comprises the first housing 1, bobbin the 2, second housing 3, flange 4, bearing (ball) cover 5, linear bearing 6, main shaft 7, coil windings 8, permanent magnet 9, elastic cylindrical pin 10, armature 11, spring 12, nut 13.
First housing 1, flange 4 and armature 11 have the little tooth becoming the tooth pitch facewidth, so can obtain the linear characteristic of better displacement-electromagnetic force.Tooth on first housing, flange leaves a certain size working gas gap with the between cog on armature.
First housing the 1, second housing 3, flange 4 (i.e. stator) and armature 11 (i.e. mover) all adopt the electrical pure iron that magnetic property is good；Permanent magnet 9 adopts high performance Sintered Nd-Fe-B Permanent N48；Other parts are non-magnet material.
Be installed on the nut 13 at main shaft 7 two ends by regulating, it is possible to adjust the pretightning force of spring 12, it is ensured that with under the static balance state of actual installation state consistency, mover and the center line alignment of corresponding teeth on stator.
Bearing (ball) cover 5 has limit function, it is ensured that mover moves in suitable displacement range.
The quality of the object of the size of permanent magnet 9 vibration isolation as required, and the Static Correction after required installation determines.
The present invention is in actual applications, when not raw vibration, coil no power, under the effect of vibration isolation object gravity, main shaft 7 produces a Static Correction so that the tooth on mover and the tooth on stator stagger certain distance, effect due to magnetic field of permanent magnet, mover is produced a reverse magnetic pull, this magnetic pull and the gravitational equilibrium of vibration isolation object by stator, is equivalent to the passive vibration isolation device in tradition semi-active vibration-isolating system.Therefore, the present invention can save the passive vibration isolation device in tradition semi-active vibration-isolating system in use, greatly reduces system complexity.
When vibration occurs, if outer scrambling rate is relatively big, then coil windings is again without energising, because now the present invention is equivalent to a passive vibration isolation device, it is possible to be effectively isolated dither；If outer scrambling rate is less, in the amplitude range allowed, can pass through coil windings is energized, make the magnetic direction that coil windings produces contrary with the magnetic direction that permanent magnet produces, offset the magnetic force that a part of permanent magnet produces, thus reducing system stiffness, under relatively low outer scrambling rate, still can be substantially reduced the transport (the electromagnetic spring structure of the permanent-magnetism electromagnetic combined type that the present invention adopts ensure that the destabilization problems not havinging traditional mechanical spring when rigidity is less) of power.
When outer scrambling rate changes on a large scale, it is possible to by changing coil windings sense of current and size, change system stiffness.Owing to the present invention can passing through, coil windings is reversely energized, the less value of magnetic field cancellation to produced by permanent magnet is (in any case traditional semi-active vibration isolation electromagnetic actuator changes the sense of current, all can only increase system stiffness, and system stiffness can not be reduced), by coil windings is passed to forward current, the magnetic field superposition that the magnetic field produced produces with permanent magnet, thus obtaining bigger rigidity.Namely the present invention has broader stiffness equivalent scope, thus realizing better vibration isolating effect in broadband.
Together with the present invention the first housing is glued respectively to permanent magnet, permanent magnet and the second housing, main shaft and armature are consolidated by elastic cylindrical pin, equipped with linear bearing between main shaft and bearing (ball) cover, it is bolted between flange and the second housing, bearing (ball) cover and flange, space between housing and flange is provided with bobbin, bobbin is wound with coil windings.
Number and the installation site of permanent magnet are determined on a case-by-case basis, it is possible to be installed on housing parts, it is also possible to be installed on armature part, it is also possible to be installed on the two part simultaneously.
When outer scrambling rate is relatively low, coil passing to reverse current, the electromagnetic field of generation offsets a part of permanent magnetic field so that system stiffness reduces, and is possible not only to avoid formant, it is also possible to effectively reduce the transport of power during low-frequency excitation.
When outer scrambling rate changes on a large scale, by changing direction and the size of coil current, it is achieved the counteracting of electromagnetic field and permanent magnetic field or superposition, it is thus achieved that broader stiffness equivalent scope, thus good vibration isolation in broadband.
The object of the present invention is achieved like this: includes the parts such as the first housing, the second housing, bobbin, flange, bearing (ball) cover, linear bearing, main shaft, coil windings, permanent magnet, elastic cylindrical pin, armature, spring and nut.Together with first housing is glued respectively to permanent magnet, permanent magnet and the second housing, main shaft and armature are consolidated by elastic cylindrical pin, equipped with linear bearing between main shaft and bearing (ball) cover, it is bolted between flange and the second housing, bearing (ball) cover and flange, space between housing and flange is provided with bobbin, bobbin is wound with coil windings.
Having the little tooth becoming the tooth pitch facewidth on first housing, flange and armature, the tooth on the first housing, flange leaves a certain size working gas gap with the between cog on armature.Spring is installed between axle and bearing (ball) cover, and is fixed by nut.Flexible packing ring between bobbin and housing and flange.Bearing (ball) cover has limit function.Guarantee that the displacement of armature is in suitable scope.
Claims (6)
- null1. the semiactive vibration-isolating actuator of permanent-magnetism electromagnetic compound，It is characterized in that: include the first housing、Second housing、Flange、Main shaft、Permanent magnet、Armature，Described first housing、Second housing、Flange、Armature and permanent magnet are circulus，Permanent magnet is arranged between the first housing and the second housing，First housing、Permanent magnet and the second housing have collectively constituted the shell structure of hollow，Main shaft is arranged in armature，And the two of main shaft ends pass armature outside respectively，Armature is arranged in shell structure，The first end of armature extend out to outside the second housing，The end of flange and the second housing fixes and matches with the outside of armature first end in the inner side of flange，Clutch shaft bearing end cap is fixed in the end of the first housing，The second bearing (ball) cover is fixed in the end of flange，Clutch shaft bearing end cap and the second bearing (ball) cover are separately positioned on outside two ends of main shaft，It is separately installed with nut outside two ends of main shaft，Two nuts and clutch shaft bearing end cap、It is respectively mounted spring between second bearing (ball) cover.
- 2. the semiactive vibration-isolating actuator of permanent-magnetism electromagnetic compound according to claim 1, is characterized in that: hookup wire coil between permanent magnet and main shaft, and bobbin is installed coil windings.
- 3. the semiactive vibration-isolating actuator of permanent-magnetism electromagnetic compound according to claim 1 and 2, it is characterized in that: inside the first case inside, flange and on outside armature, tooth is set, when main shaft does not produce displacement, the position of the tooth on armature that the tooth of the first case inside is corresponding is oppositely arranged, and the position of the tooth on armature that tooth inside flange is corresponding is oppositely arranged.
- 4. the semiactive vibration-isolating actuator of permanent-magnetism electromagnetic compound according to claim 3, is characterized in that: the tooth on the first housing, flange, armature is the tooth becoming the tooth pitch facewidth.
- 5. the semiactive vibration-isolating actuator of permanent-magnetism electromagnetic compound according to claim 3, it is characterized in that: between the tooth on armature that the tooth of the first case inside is corresponding, leave working gas gap, between the tooth on armature that tooth inside flange is corresponding, leave working gas gap.
- 6. the semiactive vibration-isolating actuator of permanent-magnetism electromagnetic compound according to claim 4, it is characterized in that: between the tooth on armature that the tooth of the first case inside is corresponding, leave working gas gap, between the tooth on armature that tooth inside flange is corresponding, leave working gas gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610297795.6A CN105782306B (en) | 2016-05-06 | 2016-05-06 | The compound semiactive vibration-isolating actuator of permanent-magnetism electromagnetic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610297795.6A CN105782306B (en) | 2016-05-06 | 2016-05-06 | The compound semiactive vibration-isolating actuator of permanent-magnetism electromagnetic |
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| Publication Number | Publication Date |
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| CN105782306A true CN105782306A (en) | 2016-07-20 |
| CN105782306B CN105782306B (en) | 2018-08-17 |
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| CN201610297795.6A Active CN105782306B (en) | 2016-05-06 | 2016-05-06 | The compound semiactive vibration-isolating actuator of permanent-magnetism electromagnetic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015420A (en) * | 2016-08-08 | 2016-10-12 | 河海大学 | Semi-active vibration control eddy current damper |
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| JPH05116518A (en) * | 1991-09-13 | 1993-05-14 | Atsugi Unisia Corp | Electromagnetic suspension device |
| GB2251049B (en) * | 1990-10-20 | 1994-08-03 | Atsugi Unisia Corp | Electromagnetic strut assembly |
| CN201062645Y (en) * | 2007-06-19 | 2008-05-21 | 刘新广 | Self tuning magnetic vibrating absorber |
| CN101526121A (en) * | 2009-04-17 | 2009-09-09 | 哈尔滨工程大学 | Redundant variable pitch structure semiactive vibration-isolating actuator |
| CN104595402A (en) * | 2015-01-23 | 2015-05-06 | 西安交通大学 | Electromagnetic branch circuit damping vibration absorber adopting ring-shaped permanent magnet |
| CN205715405U (en) * | 2016-05-06 | 2016-11-23 | 哈尔滨工程大学 | The semiactive vibration-isolating actuator that permanent-magnetism electromagnetic is compound |
-
2016
- 2016-05-06 CN CN201610297795.6A patent/CN105782306B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2251049B (en) * | 1990-10-20 | 1994-08-03 | Atsugi Unisia Corp | Electromagnetic strut assembly |
| JPH05116518A (en) * | 1991-09-13 | 1993-05-14 | Atsugi Unisia Corp | Electromagnetic suspension device |
| CN201062645Y (en) * | 2007-06-19 | 2008-05-21 | 刘新广 | Self tuning magnetic vibrating absorber |
| CN101526121A (en) * | 2009-04-17 | 2009-09-09 | 哈尔滨工程大学 | Redundant variable pitch structure semiactive vibration-isolating actuator |
| CN104595402A (en) * | 2015-01-23 | 2015-05-06 | 西安交通大学 | Electromagnetic branch circuit damping vibration absorber adopting ring-shaped permanent magnet |
| CN205715405U (en) * | 2016-05-06 | 2016-11-23 | 哈尔滨工程大学 | The semiactive vibration-isolating actuator that permanent-magnetism electromagnetic is compound |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015420A (en) * | 2016-08-08 | 2016-10-12 | 河海大学 | Semi-active vibration control eddy current damper |
| CN106015420B (en) * | 2016-08-08 | 2018-05-11 | 河海大学 | A kind of semi-active type vibration control eddy current damper |
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| CN105782306B (en) | 2018-08-17 |
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